What John Heinzelman has said about Combined DNA Index System

1 quote · 1 episode · Oct 3, 2026

John Heinzelman, Scottsdale Police Department detective who led the Feldman murder investigation, has been quoted on Combined DNA Index System once in 1 episode of 20/20, most recently on October 3, 2026. Each quote below is verbatim and links to the moment it was said.

In their words

  • Heinzelman said the lack of a CODIS hit indicated the killer had never been arrested and was not in the system.

    “It tells us that this person has never been arrested, that this person is not in the system”

    20/20: Home Alone (Oct 3, 2026) · Listen from 26:46

Episodes

  • Home Alone

    20/20 · Oct 3, 2026 · 1 h 26 min

    John Quiñones reports on the 2015 murder of Allison Feldman in Scottsdale, solved through Arizona's first use of familial DNA and contested in court.

John Heinzelman on other topics